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Finding the Fourth Proportional to 161,859.65, 223,368.35 and 93,879.50

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Solution

The fourth proportional to 161,859.65, 223,368.35 and 93,879.50 is: 129,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,859.65 : 223,368.35 = 93,879.50 : x
  2. Step 2: Convert to fraction form
    161,859.65/223,368.35 = 93,879.50/x
  3. Step 3: Cross multiply
    161,859.65x = 223,368.35 × 93,879.50
  4. Step 4: Simplify right side
    161,859.65x = 20,969,707,427.59
  5. Step 5: Solve for x
    x = 20,969,707,427.59/161,859.65
  6. Step 6: Final answer
    x = 129,554.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.